摘要
【目的】探讨彩色多普勒超声诊断胡桃夹现象(nutcracker phenomenon,NCP)的临床价值。【方法】应用彩色多普勒超声观测NCP组(19例)和健康对照组(20例),分别测量腹主动脉和肠系膜上动脉起始部夹角θ,左肾静脉近肾端最宽处内径a及其血流峰值速度Va,经过夹角处左肾静脉内径b及其血流峰值速度Vb,通过简化柏努利方程计算左肾静脉与下腔静脉压力差(ΔP)。【结果】彩色多普勒超声可清晰显示NCP的解剖情况和血流动力学变化,NCP组与对照组θ无显著性差异,a/b、ΔP均有显著性差异(P<0.05)。以ΔP≥3.5 mmHg为临界值诊断NCP准确性达97.4%。【结论】彩色多普勒超声可作为诊断NCP的首选方法,ΔP与a/b内径比联合应用可明显提高NCP的诊断准确性。
[Objective] To investigate the clinic value of color Doppler ultrasound in the diagnosis of Nutcracker Phenomenon（NCP）. [Methods]The left renal vein was measured on horizontal deeubitus in 19 NCP patients and 20 healthy cases selected randomly. The parameters included the angle（ θ ） and left renal vein interior diameter（b） and its flow velocity（Vb） between superior mesenteric artery and abdominal aorta, proximal interior diameter（a） and its flow velocity（Va）of left renal vein. The difference of pressure（△P） between left renal vein and inferior vena cava was calculated with simplified Bernoullis equation. [ Results] There was difference with a/b and AP between normal and the NCP patients. Compared to others methods, taking 3.5 mmHg as the cut-off, △P had the highest accuracy （97.4%） in diagnosis of NCP. [Conclusion] Color Doppler ultrasound is the best method for clinical diagnosis of NCP. Compositive adhibition of a/b and △P may increase the accuracy in diagnosing NCP.
出处
《武警医学院学报》
CAS
2010年第9期711-713,F0004,共4页
Acta Academiae Medicinae CPAPF
关键词
彩色多普勒超声检查
胡桃夹现象
左肾静脉压迫征
Color Doppler uhrasonography
Nutcracker phenomenon
Left renal venal entrapment syndrome
